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drm/i915: Setup DPLL/DPLLMD for DSI too on VLV/CHV
Set up DPLL and DPLL_MD even when driving DSI output on VLV/CHV. While the DPLL isn't used to provide the clock we still need the refclock, and it appears that the pixel repeat factor also has an effect on DSI output. So set up eveyrhing in DPLL and DPLL_MD as we would do for DP/HDMI/VGA, but don't actually enable the DPLL or configure the dividers via DPIO. Signed-off-by: Ville Syrjälä <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Reviewed-by: Jani Nikula <[email protected]> Tested-by: Jani Nikula <[email protected]>
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